<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>打印质子数</title>
</head>
<body>
<script>
    for (var i=2;i<=100;i++){
        var flag=true;
        for (var j=2;j<i;j++) {
            if (i % j==0){
                flag=false
            }
        }
        if (flag) {
            console.log(i)
        }
    }
</script>
</body>
</html>